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1973 North Indian Ocean cyclone season

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Field	Value
Basin	NIO
Year	1973
Track	1973 North Indian Ocean cyclone season summary.jpg
First storm formed	May 28, 1973
Last storm dissipated	December 9, 1973
Total disturbances	20
Total depressions	2
Total storms	6
Total hurricanes	4
five seasons	1971, 1972, 1973, 1974, 1975
Atlantic season	1973 Atlantic hurricane season
East Pacific season	1973 Pacific hurricane season
West Pacific season	1973 Pacific typhoon season

The 1973 North Indian Ocean cyclone season was part of the annual cycle of tropical cyclone formation. The season has no official bounds but cyclones tend to form between April and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. There are two main seas in the North Indian Ocean—the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center (JTWC) releases unofficial advisories. An average of five tropical cyclones form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.

Systems

Tropical Depression One (01A)

|1-min winds=25 |3-min winds=30}} This system formed in the Arabian Sea on May 27 and struck the Arabian peninsula on May 28, becoming the tenth system to affect the region since 1891.

Tropical Storm Two (02A)

|1-min winds=35 |3-min winds=30

Tropical Storm Six (06B)

|1-min winds=35 |3-min winds=30}}

Tropical Storm Ten (10B)

|1-min winds=40 |3-min winds=45

Tropical Storm Twelve (12B)

|1-min winds=60 |3-min winds=55 This system formed on 3 November and intensified up to Severe Cyclonic Storm and to a high-end tropical storm by 8 November. On 9 November, the storm made landfall at Paradip in Odisha and dissipated rapidly within six hours after the landfall as the storm interacted with a trough. Paradip and Chandbali reported gust winds up to 110 kmph. This cyclone caused considerable agricultural damages to crops there but deaths are unknown.

Tropical Storm Thirteen (13B)

|1-min winds=55 |3-min winds=50

Tropical Storm Fourteen (14B)

|1-min winds=60 |3-min winds=60 This system formed as a tropical depression in the southern Bay on December 5, strengthening into a tropical storm as it turned north-northwest on December 5, then to near-hurricane strength on December 6. The cyclone recurved, striking Indian near Calcutta on December 9, though its main impacts were across Bangladesh.

References

(2012). "Frequently Asked Questions: What is the annual frequency of Cyclones over the Indian Seas? What is its intra-annual variation?". India Meteorological Department.
(May 25, 2009). "Bulletins Issued by Regional Specialized Meteorological Centre (RSMC) – Tropical Cyclones, New Delhi". India Meteorological Department.
(November 1973). "North Indian Ocean". [[National Oceanic and Atmospheric Administration]].
Richard M. DeAngelis. (March 1974). "Hurricane Alley". Mariners Weather Log.

Info: Wikipedia Source

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